Tears in Rain
Rutger Hauer’s perishing soliloquy, colloquially known as Tears in Rain or The C-Beams Speech, is the last piece on the soundtrack:
“I’ve…seen things you people wouldn’t believe. Attack ships on fire off the shoulder of Orion; I watched c-beams glitter in the dark near the Tannhäuser Gate. All those…moments will be lost in time, like…tears…in rain. Time…to die. I have known adventures, seen places you people will never see, I’ve been Offworld and back…frontiers! I’ve stood on the back deck of a blinker bound for the Plutition Camps with sweat in my eyes watching the stars fight on the shoulder of Orion…I’ve felt wind in my hair, riding test boats off the black galaxies and seen an attack fleet burn like a match and disappear. I’ve seen it, felt it…!”
Image © IWDRM, via Tumblr.
Thematically, the music ties together several previous cues including the opening ‘main’ theme and the love theme.
The main theme motif is modulated up through various keys, using a sort of call and response between a Rhodes and the CS80 sound. Vangelis then slides into the love theme’s harmonies before flirting briefly with some Chariots of Fire-esque lines around the 2:00 mark:
Roy Batty’s character throughout the film, and this scene in particular, has had a lasting impact on music and culture. It even has its own Wikipedia entry, and of course it’s been sampled within an inch of its life:
Ayman – Time To Die 
Shroombab & Polarity – Bad Motions 
DJ Fav – Lost In Time (Lost Mix) 
Zomby – Tears in the Rain  (not DnB shocker!)
London Elektricity – Attack Ships On Fire